(function($) {
    $.fn.extend({
        serializeObject : function() {
            var o = {};
            var a = this.serializeArray();
            $.each(a, function() {
                if (o[this.name]) {
                    if (!o[this.name].push) {
                        o[this.name] = [ o[this.name] ];
                    }
                    o[this.name].push(this.value || '');
                } else {
                    o[this.name] = this.value || '';
                }
            });
            return o;
        }
    });

})(jQuery)
$.ajax({
    url : url,
    type : 'put',
    data:$.toJSON($('#form表单的id').serializeObject()),
    contentType : 'application/json;charset=UTF-8',
    success : function(result) {
        alert("成功！");
    },
    error : function() {
        alert("失败!");
    }
});